324
FZUS51 KBOX 171104
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
704 AM EDT TUE MAR 17 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 25 NM
ANZ200-180000-
704 AM EDT TUE MAR 17 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
STRONG LOW PRES WILL PRES WILL CONTINUE TO INTENSIFY TONIGHT AS IT
LIFTS NORTHEAST THROUGH QUEBEC. THIS WILL DRAG A STRONG COLD FRONT
ACROSS SOUTHERN NEW ENG AND THE COASTAL WATERS VERY LATE TONIGHT.
THE STRONG LOW PRES WILL MOVE N THROUGH EASTERN CANADA ON TUE. HIGH
PRES BUILDS OVER THE WATERS WED INTO THU, MOVING OFFSHORE FRI AS A
COLD FRONT APPROACHES FROM THE WEST.
ANZ250-180000-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT, DIMINISHING
TO 20 TO 25 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 8 TO
11 FT, SUBSIDING TO 6 TO 9 FT THIS AFTERNOON. WAVE DETAIL: SE
11 FT AT 10 SECONDS AND SW 6 FT AT 6 SECONDS, BECOMING SE 8 FT AT
11 SECONDS AND W 5 FT AT 5 SECONDS. A SLIGHT CHANCE OF RAIN THIS
MORNING.
TONIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 6 TO
9 FT. WAVE DETAIL: SE 8 FT AT 11 SECONDS AND W 6 FT AT 5 SECONDS.
WED
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, DIMINISHING TO
5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 7 FT. WAVE DETAIL: SE 6 FT
AT 11 SECONDS AND W 5 FT AT 5 SECONDS.
WED NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND
W 2 FT AT 4 SECONDS.
THU
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND
SW 2 FT AT 3 SECONDS.
THU NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 3 TO 4 FT. WAVE DETAIL: SE 3 FT AT 9 SECONDS AND S
2 FT AT 3 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 20 TO 25 KT WITH GUSTS UP
TO 30 KT. SEAS 3 TO 5 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-180000-
MASSACHUSETTS BAY AND IPSWICH BAY-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 5 TO
7 FT. WAVE DETAIL: SE 7 FT AT 10 SECONDS AND SW 4 FT AT
5 SECONDS.
TONIGHT
W WINDS 20 TO 25 KT. SEAS 4 TO 6 FT. WAVE DETAIL: W
4 FT AT 4 SECONDS AND E 4 FT AT 12 SECONDS.
WED
W WINDS 15 TO 20 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: NW 4 FT AT 4 SECONDS AND
E 4 FT AT 12 SECONDS.
WED NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND
SW 2 FT AT 3 SECONDS.
THU
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: E 3 FT AT 10 SECONDS AND
SE 2 FT AT 4 SECONDS.
THU NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: E
3 FT AT 9 SECONDS AND SE 2 FT AT 4 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 20 TO 25 KT. SEAS 2 TO
3 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-180000-
CAPE COD BAY-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
SW WINDS 25 TO 30 KT, BECOMING W 15 TO 20 KT THIS
AFTERNOON. SEAS 4 TO 6 FT, SUBSIDING TO 3 TO 4 FT THIS AFTERNOON.
WAVE DETAIL: SW 5 FT AT 5 SECONDS AND SE 5 FT AT 10 SECONDS,
BECOMING SE 4 FT AT 10 SECONDS AND W 3 FT AT 4 SECONDS. A CHANCE
OF RAIN THIS MORNING.
TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. WAVE DETAIL: SE 4 FT AT 11 SECONDS AND W 3 FT AT 4 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: NW 3 FT
AT 5 SECONDS AND SE 3 FT AT 11 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW
2 FT AT 5 SECONDS AND E 2 FT AT 8 SECONDS.
THU
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: E 2 FT
AT 7 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 9 SECONDS AND S 1 FOOT AT 2 SECONDS.
FRI
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 20 TO 25 KT. SEAS 2 TO
4 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-180000-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
SW WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT, BECOMING W
20 TO 25 KT WITH GUSTS UP TO 30 KT THIS AFTERNOON. SEAS 10 TO
14 FT, SUBSIDING TO 8 TO 11 FT THIS AFTERNOON. WAVE DETAIL: S
14 FT AT 11 SECONDS AND SW 4 FT AT 5 SECONDS, BECOMING S 11 FT AT
11 SECONDS AND W 4 FT AT 5 SECONDS. A CHANCE OF RAIN THIS
MORNING. SCATTERED SPRINKLES THIS AFTERNOON.
TONIGHT
W WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. WAVE DETAIL: S
10 FT AT 11 SECONDS AND NW 5 FT AT 5 SECONDS.
WED
NW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 5 TO 8 FT. WAVE DETAIL: SE 7 FT
AT 11 SECONDS AND NW 5 FT AT 6 SECONDS.
WED NIGHT
S WINDS AROUND 5 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE
5 FT AT 10 SECONDS AND NW 2 FT AT 6 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: SE 5 FT
AT 10 SECONDS AND NW 1 FOOT AT 5 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS AND NW 1 FOOT AT 3 SECONDS.
FRI AND FRI NIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 15 TO
20 KT. SEAS 3 TO 4 FT.
SAT AND SAT NIGHT
W WINDS 15 TO 20 KT, BECOMING SW 20 TO 25 KT
WITH GUSTS UP TO 30 KT. SEAS 3 TO 5 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-180000-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT. SEAS 11 TO
15 FT, SUBSIDING TO 9 TO 13 FT THIS AFTERNOON. WAVE DETAIL: S
15 FT AT 11 SECONDS AND W 2 FT AT 5 SECONDS, BECOMING SW 13 FT AT
11 SECONDS AND W 2 FT AT 5 SECONDS. A CHANCE OF RAIN THIS
MORNING.
TONIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 9 TO
12 FT, SUBSIDING TO 7 TO 10 FT AFTER MIDNIGHT. WAVE DETAIL: SW
12 FT AT 11 SECONDS AND W 3 FT AT 6 SECONDS, BECOMING SW 10 FT AT
10 SECONDS AND NW 2 FT AT 5 SECONDS.
WED
NW WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT, SUBSIDING TO 4 TO 6 FT IN THE
AFTERNOON. WAVE DETAIL: S 8 FT AT 10 SECONDS AND NW 3 FT AT
5 SECONDS, BECOMING S 6 FT AT 10 SECONDS AND W 1 FOOT AT
5 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL: S
5 FT AT 10 SECONDS AND W 1 FOOT AT 5 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 9 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS.
FRI AND FRI NIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 15 TO
20 KT. SEAS 2 TO 4 FT.
SAT AND SAT NIGHT
W WINDS 15 TO 20 KT, BECOMING SW 25 TO
30 KT. SEAS 3 TO 5 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-180000-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT THIS
AFTERNOON. SEAS 11 TO 15 FT, SUBSIDING TO 10 TO 12 FT THIS
AFTERNOON. WAVE DETAIL: S 15 FT AT 11 SECONDS AND W 3 FT AT
5 SECONDS, BECOMING SW 12 FT AT 11 SECONDS AND W 3 FT AT
6 SECONDS.
TONIGHT
W WINDS 20 TO 25 KT WITH GUSTS UP TO 30 KT. SEAS 9 TO
11 FT, SUBSIDING TO 7 TO 10 FT AFTER MIDNIGHT. WAVE DETAIL: SW
11 FT AT 11 SECONDS AND W 3 FT AT 5 SECONDS, BECOMING S 9 FT AT
11 SECONDS AND NW 3 FT AT 5 SECONDS.
WED
NW WINDS 15 TO 20 KT, BECOMING W 5 TO 10 KT IN THE
AFTERNOON. SEAS 5 TO 8 FT, SUBSIDING TO 5 TO 6 FT IN THE
AFTERNOON. WAVE DETAIL: S 8 FT AT 10 SECONDS AND NW 2 FT AT
4 SECONDS, BECOMING S 6 FT AT 10 SECONDS AND W 1 FOOT AT
4 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE DETAIL: S
5 FT AT 10 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS.
FRI AND FRI NIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 15 TO
20 KT. SEAS 3 TO 4 FT.
SAT AND SAT NIGHT
W WINDS 15 TO 20 KT, BECOMING S 25 TO 30 KT.
SEAS 3 TO 5 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-180000-
NANTUCKET SOUND-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT THIS
AFTERNOON. GUSTS UP TO 40 KT. SEAS 5 TO 8 FT. WAVE DETAIL: SW
5 FT AT 5 SECONDS AND S 4 FT AT 11 SECONDS. A CHANCE OF RAIN THIS
MORNING.
TONIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: W 4 FT AT 5 SECONDS AND S
3 FT AT 11 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: W 3 FT
AT 4 SECONDS AND SE 2 FT AT 11 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
2 FT AT 10 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 9 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 2 FT AT 9 SECONDS AND S 1 FOOT AT 2 SECONDS.
FRI AND FRI NIGHT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT. SEAS AROUND 2 FT.
SAT AND SAT NIGHT
W WINDS 15 TO 20 KT, BECOMING SW 20 TO
25 KT. SEAS 2 TO 3 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-180000-
VINEYARD SOUND-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT THIS
AFTERNOON. SEAS 7 TO 10 FT, SUBSIDING TO 5 TO 8 FT THIS
AFTERNOON. WAVE DETAIL: SW 9 FT AT 11 SECONDS AND SW 4 FT AT
5 SECONDS, BECOMING SW 6 FT AT 11 SECONDS AND W 3 FT AT
5 SECONDS. A SLIGHT CHANCE OF RAIN THIS MORNING.
TONIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: SW 6 FT AT 10 SECONDS AND
W 3 FT AT 5 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 3 TO 5 FT. WAVE DETAIL: S 4 FT
AT 10 SECONDS AND W 2 FT AT 5 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 9 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 9 SECONDS AND S 1 FOOT AT 2 SECONDS.
FRI AND FRI NIGHT
SW WINDS 10 TO 15 KT, INCREASING TO 15 TO
20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE
2 FT AT 8 SECONDS.
SAT AND SAT NIGHT
W WINDS 15 TO 20 KT, BECOMING SW 20 TO
25 KT. SEAS 2 TO 4 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-180000-
BUZZARDS BAY-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT THIS
AFTERNOON. GUSTS UP TO 40 KT. SEAS 5 TO 7 FT. WAVE DETAIL: SW
7 FT AT 11 SECONDS AND SW 5 FT AT 5 SECONDS. A SLIGHT CHANCE OF
RAIN THIS MORNING.
TONIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: SW 5 FT AT 10 SECONDS AND
W 3 FT AT 5 SECONDS.
WED
NW WINDS 10 TO 15 KT, BECOMING SW 5 TO 10 KT IN THE
AFTERNOON. SEAS 2 TO 4 FT. WAVE DETAIL: S 3 FT AT 10 SECONDS AND
W 2 FT AT 5 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
2 FT AT 9 SECONDS AND SW 1 FOOT AT 4 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 9 SECONDS AND S 1 FOOT AT 3 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 20 TO 25 KT. SEAS 2 TO
4 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-180000-
RHODE ISLAND SOUND-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 25 TO 30 KT, DIMINISHING TO 20 TO 25 KT THIS
AFTERNOON. SEAS 9 TO 13 FT, SUBSIDING TO 8 TO 11 FT THIS
AFTERNOON. WAVE DETAIL: S 13 FT AT 11 SECONDS AND W 3 FT AT
5 SECONDS, BECOMING S 11 FT AT 11 SECONDS AND W 4 FT AT
5 SECONDS.
TONIGHT
W WINDS 20 TO 25 KT, BECOMING NW 15 TO 20 KT AFTER
MIDNIGHT. SEAS 6 TO 9 FT. WAVE DETAIL: S 9 FT AT 11 SECONDS AND W
3 FT AT 5 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: S 6 FT
AT 10 SECONDS AND W 2 FT AT 4 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 10 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 4 FT AT 9 SECONDS.
FRI
SW WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE 3 FT
AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
FRI NIGHT THROUGH SAT NIGHT
S WINDS 20 TO 25 KT. SEAS 2 TO
4 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-180000-
BLOCK ISLAND SOUND-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT. SEAS 9 TO
12 FT, SUBSIDING TO 7 TO 10 FT THIS AFTERNOON. WAVE DETAIL: S
12 FT AT 11 SECONDS AND W 4 FT AT 5 SECONDS, BECOMING S 9 FT AT
11 SECONDS AND W 5 FT AT 5 SECONDS.
TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 6 TO
9 FT. WAVE DETAIL: S 8 FT AT 11 SECONDS AND W 4 FT AT 5 SECONDS.
WED
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING W
5 TO 10 KT IN THE AFTERNOON. SEAS 4 TO 6 FT. WAVE DETAIL: SE 6 FT
AT 10 SECONDS AND W 2 FT AT 4 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
4 FT AT 10 SECONDS.
THU
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE 4 FT
AT 9 SECONDS.
THU NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
4 FT AT 9 SECONDS.
FRI
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
FRI NIGHT THROUGH SAT NIGHT
S WINDS 20 TO 25 KT. SEAS 2 TO
4 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-180000-
BOSTON HARBOR-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT THIS
AFTERNOON. GUSTS UP TO 30 KT. WAVES AROUND 2 FT, EXCEPT 3 TO 5 FT
AT THE OUTER HARBOR ENTRANCE. SCATTERED SPRINKLES THIS MORNING.
TONIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES
AROUND 2 FT.
WED
W WINDS 15 TO 20 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. WAVES AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS.
WED NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
THU
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT IN THE
AFTERNOON.
THU NIGHT
S WINDS 10 TO 15 KT. WAVES AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS.
FRI
SW WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 20 TO 25 KT. WAVES AROUND
2 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-180000-
NARRAGANSETT BAY-
704 AM EDT TUE MAR 17 2026
..GALE WARNING IN EFFECT UNTIL 8 AM EDT THIS MORNING
TODAY
W WINDS 20 TO 25 KT, DIMINISHING TO 15 TO 20 KT THIS
AFTERNOON. GUSTS UP TO 35 KT. WAVES 5 TO 7 FT. AT THE BAY
ENTRANCE, WAVES 7 TO 10 FT, SUBSIDING TO 5 TO 7 FT THIS
AFTERNOON. SCATTERED SPRINKLES THIS AFTERNOON.
TONIGHT
W WINDS 15 TO 20 KT, DIMINISHING TO 10 TO 15 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. WAVES 3 TO 5 FT, SUBSIDING TO 2 TO
3 FT AFTER MIDNIGHT. AT THE BAY ENTRANCE, WAVES 4 TO 6 FT.
WED
NW WINDS 5 TO 10 KT, BECOMING SW IN THE AFTERNOON. WAVES
2 TO 3 FT.
WED NIGHT
S WINDS 5 TO 10 KT, DIMINISHING TO AROUND 5 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT. WAVES 2 TO 3 FT.
FRI
SW WINDS 10 TO 15 KT. WAVES AROUND 2 FT.
FRI NIGHT THROUGH SAT NIGHT
SW WINDS 15 TO 20 KT. WAVES 2 TO
3 FT. A CHANCE OF RAIN.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
FOR THE LATEST UPDATES...PLEASE VISIT OUR WEBPAGE AT
WWW.WEATHER.GOV/BOSTON
YOU CAN FOLLOW US ON FACEBOOK AT
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.BOSTON.GOV
YOU CAN FOLLOW US ON TWITTER AT
@NWSBOSTON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page